Peptide Calculator
Calculate molecular properties of peptide sequences
Sequence Input
Use standard one-letter codes (A, C, D, E, F, G, H, I, K, L, M, N, P, Q, R, S, T, V, W, Y)
Physical Properties
Length20
Number of amino acids
Molecular Weight2395.81
Daltons (Da)
Isoelectric Point6.13
pH at which net charge is zero
Hydropathy Index-0.49
Average hydrophobicity
Amino Acid Composition
Alanine1 (5.0%)
Cysteine1 (5.0%)
Aspartic Acid1 (5.0%)
Glutamic Acid1 (5.0%)
Phenylalanine1 (5.0%)
Glycine1 (5.0%)
Histidine1 (5.0%)
Isoleucine1 (5.0%)
Lysine1 (5.0%)
Leucine1 (5.0%)
Methionine1 (5.0%)
Asparagine1 (5.0%)
Proline1 (5.0%)
Glutamine1 (5.0%)
Arginine1 (5.0%)
Serine1 (5.0%)
Threonine1 (5.0%)
Valine1 (5.0%)
Tryptophan1 (5.0%)
Tyrosine1 (5.0%)
Recommendations
Solubility
Good solubility expected in aqueous solutions
Stability
Monitor oxidation state of cysteine residues
Buffer Selection
Use buffer with pH 6 ± 1 for optimal stability
Storage
Store lyophilized at -20°C, reconstituted at -80°C